+/**\r
+ Get available system memory below 1MB by specified size.\r
+\r
+ @param[in] CpuMpData The pointer to CPU MP Data structure.\r
+**/\r
+VOID\r
+BackupAndPrepareWakeupBuffer(\r
+ IN CPU_MP_DATA *CpuMpData\r
+ )\r
+{\r
+ CopyMem (\r
+ (VOID *) CpuMpData->BackupBuffer,\r
+ (VOID *) CpuMpData->WakeupBuffer,\r
+ CpuMpData->BackupBufferSize\r
+ );\r
+ CopyMem (\r
+ (VOID *) CpuMpData->WakeupBuffer,\r
+ (VOID *) CpuMpData->AddressMap.RendezvousFunnelAddress,\r
+ CpuMpData->AddressMap.RendezvousFunnelSize\r
+ );\r
+}\r
+\r
+/**\r
+ Restore wakeup buffer data.\r
+\r
+ @param[in] CpuMpData The pointer to CPU MP Data structure.\r
+**/\r
+VOID\r
+RestoreWakeupBuffer(\r
+ IN CPU_MP_DATA *CpuMpData\r
+ )\r
+{\r
+ CopyMem (\r
+ (VOID *) CpuMpData->WakeupBuffer,\r
+ (VOID *) CpuMpData->BackupBuffer,\r
+ CpuMpData->BackupBufferSize\r
+ );\r
+}\r
+\r
+/**\r
+ Allocate reset vector buffer.\r
+\r
+ @param[in, out] CpuMpData The pointer to CPU MP Data structure.\r
+**/\r
+VOID\r
+AllocateResetVector (\r
+ IN OUT CPU_MP_DATA *CpuMpData\r
+ )\r
+{\r
+ UINTN ApResetVectorSize;\r
+\r
+ if (CpuMpData->WakeupBuffer == (UINTN) -1) {\r
+ ApResetVectorSize = CpuMpData->AddressMap.RendezvousFunnelSize +\r
+ sizeof (MP_CPU_EXCHANGE_INFO);\r
+\r
+ CpuMpData->WakeupBuffer = GetWakeupBuffer (ApResetVectorSize);\r
+ CpuMpData->MpCpuExchangeInfo = (MP_CPU_EXCHANGE_INFO *) (UINTN)\r
+ (CpuMpData->WakeupBuffer + CpuMpData->AddressMap.RendezvousFunnelSize);\r
+ }\r
+ BackupAndPrepareWakeupBuffer (CpuMpData);\r
+}\r
+\r
+/**\r
+ Free AP reset vector buffer.\r
+\r
+ @param[in] CpuMpData The pointer to CPU MP Data structure.\r
+**/\r
+VOID\r
+FreeResetVector (\r
+ IN CPU_MP_DATA *CpuMpData\r
+ )\r
+{\r
+ RestoreWakeupBuffer (CpuMpData);\r
+}\r
+\r